package Treemap;

import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;

public class Test {
    public static void main(String[] args) {
        Map<String,String> map = new TreeMap<>();
        map.put("三国演义","罗贯中");
        map.put("红楼梦","曹雪芹");
        System.out.println(map.get("三国演义"));
    }
}
